6510 Illegal Addressing mode: Direct Indexed Indirect (R-M-W) -- (d),y
(DCP,ISB,RLA,RRA,SLO,SRE)
(2 bytes) (7,8 cycles)
+---------------+------------------+-----------------------+----------+
| Cycle | Address Bus | Data Bus |Read/Write|
+---------------+------------------+-----------------------+----------+
| 1 | PBR,PC | Op Code | R |
| 2 | PBR,PC+1 | Direct Offset | R |
| 3 | 0,D+DO | Absolute Address Low | R |
| 4 | 0,D+DO+1 | Absolute Address High | R |
| (4) 4a | DBR,AAH,AAL+YL | Internal Operation | R |
| 5 | DBR,AA+Y | Data Low | R |
| 6 | DBR,AA | Old Data Low | W |
| 7 | DBR,AA | New Data Low | W |
+---------------+------------------+-----------------------+----------+
(4) Add 1 cycle for indexing across page boundaries or write.
See also: Abbreviations